US Bridges

Rock Run Road over Loyalsock Creek

PoorPosted for load

Sullivan County, Pennsylvania · < 1 MI North of SR 154 · Structure no. 000000000032131

Built
1897
128 years old, rebuilt 1983
Condition
Poor
inspected August 2023
Type
Truss - Thru
Aluminum, Wrought Iron, or Cast Iron
Length
125 ft
1 main span
Daily traffic
15
2022 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Rock Run Road over Loyalsock Creek is a aluminum, wrought iron, or cast iron truss - thru carrying Rock Run Road over Loyalsock Creek in Sullivan County, Pennsylvania. It was built in 1897 and reconstructed in 1983, so it is 128 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 15 vehicles a day, projected to reach 20 by 2044. The structure is 125 ft (38.1 m) long and 15 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesRock Run Road
CrossesLoyalsock Creek
Location< 1 MI North of SR 154
RouteState Lands Road 0
CountySullivan County
StatePennsylvania
Coordinates41.4599, -76.5095
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating20 US tons
Inventory rating13 US tons

Structure

Structure typeTruss - Thru
MaterialAluminum, Wrought Iron, or Cast Iron
DeckWood or timber
Main spans1
Design loadH 20
Structure length125 ft (38.1 m)
Longest span123 ft (37.5 m)
Deck width15 ft (4.5 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deck13 ft (3.8 m)

Traffic and service

Average daily traffic15 (2022)
Projected traffic20 by 2044
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$750,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rock Run Road over Loyalsock Creek built?

It was built in 1897, making it 128 years old in 2025. It was reconstructed in 1983.

What condition is Rock Run Road over Loyalsock Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Rock Run Road over Loyalsock Creek carry?

About 15 vehicles per day (2022 count).

How long is Rock Run Road over Loyalsock Creek?

The structure is 125 ft (38.1 m) long with a longest span of 123 ft (37.5 m) and a deck 15 ft wide.

Who owns Rock Run Road over Loyalsock Creek?

It is owned by the State Park, Forest, or Reservation Agency.